Originally Posted by
victorc10
Checklist says Fuel............Balance. How do you propose to do this without opening the crossfeed?
Sixty minutes is not about fuel, ETOPS is about is something else, for example whats the difference between an ETOPS 738 and a non ETOPS 738 with the same engines? Got nothing to do with Fuel, except that you need to have enough fuel to perform the various scenarios. Fuel increases due lower altitude, and increased thrust to MCT on the remaining engine, drag also increases due asymmetry, dead engine and control deflection.
Balance only if needed. We are not keeping the crossfeed open the entire time right? So how the live engine takes fuel from the dead engine's tank? I dont know am I missing something?
Another question is after engine failure does the FMC fuel prediction for overhead alternate accurate? If so then do we need to open the qrh performance for that after re programming the fmc for alternate destination? Sorry asking too many questions.